@beckfield said:
I think the granular approach would be more useful. More like the way we select Libraries to share, rather than “Allow Channels.”
There’s no question that a more granular sharing functionality would be more flexible/powerful in general. But I think the question here is largely, “if sharing of playlists with a specified user was all-or-nothing, would that still be useful enough to bother with at all”?
Keep in mind that an approach like that would very likely be easier and quicker to develop and thus more likely to appear in the shorter term than [super in-depth/complicated sharing]. And such a thing might also be a first step toward more extensive sharing. 
